The Importance of Screw Design in Scaphoid Fracture Fixation
نویسنده
چکیده
The purpose of this study was to determine the influence of gender, screw design, and the approach on maximal screw length in scaphoid fracture fixation. Measurements were performed on 3D reconstructions of 20 CT scans of normal scaphoids. A comparison was made between 15 different available screw designs and between volar and dorsal screw placement. The length of the scaphoid along its central axis is significantly longer in men. Screws with a trailing thread diameter > 3.9 mm and a leading thread diameter > 3.0 mm are significantly shorter. When using a volar approach, maximum screw length is significantly longer regardless of the screw design. Our data suggest that fixation of scaphoid fractures in men and through a volar approach will allow the surgeon to use longer screws. We recommend using a differential pitch screw with a thread diameter of 3.9 mm or less.
منابع مشابه
Percutaneous Herbert screw osteosynthesis in trans-scaphoid perilunate fracture-dislocations.
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